HOW TO APPLY THE COMPOSITION. 87 



far up the limbs as you can conveniently 

 reach, and by keeping the trees clear that 

 height, you will ensure their being healthy 

 and flourishing ; for it is a very rare thing to see 

 a tree cankered, to injure it in the head, unless 

 it is first cankered in or near the body ; and 

 there appears to be a great degree of sagacity 

 about these insects, for they always attack 

 those trees, by far the most, which are cankered, 

 and pass by those which are healthy, as if they 

 were aware they should not be disturbed. 



HOW TO APPLY THE COMPOSITION TO OLD 

 STANDARD CANKERED APPLE TREES. 



Par. 103. The next thing we will attend to 

 is the old standard trees : now instead of a 

 preventive, we want a cure, for there are but 

 few old trees to be found without the disease : 

 the operation these trees have to go through, I 

 should advise to be left till after Christmas, as 

 you would then destroy the insects which are 

 in the trees, and consequently prevent their 

 next brood. 



In the first place, cut out the canker clean, 

 (in which you will soon discover plenty of these 

 small maggots) for where the trees are very 

 bad you would not be able to get the solution 

 thoroughly into the parts affected, without first 



